JPH1184543A - Adjusting device, optical device, image reader and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute focusing without using a driver or the like and also to facilitate a fine adjustment. SOLUTION: The first and second screw parts 66 and 67 of an adjustment screw 65 are screwed and fitted to the steeped piece 56 of a base 54 and the bent part 63 of a slider 53 in this adjusting device, and are rotated by operating a grip part integrally connected with the first and second screw parts 66 and 67. The slider 53 is moved in a first direction by a first distance by the rotation of the first screw part 66, and is moved in a second direction which is reverse to the first direction by a second distance that is different from the first distance by the rotation of the second screw part 67, so that the fine adjustment of a distance between an image formation lens and a CCD sensor is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device provided in an electrophotographic copying machine for adjusting the position of an optical component, an image reading device, and an image forming device.

[0002]

2. Description of the Related Art An image reading apparatus provided in an electrophotographic copying machine reads an image using a CCD sensor which receives reflected light from a document, photoelectrically converts the light, and outputs an electric signal corresponding to the document image. There is.

In this image reading apparatus, since reflected light from a document is formed on a CCD sensor via an imaging lens, focus adjustment for adjusting a distance between the imaging lens and the CCD sensor is required. ing. This focus adjustment is CC
This is performed by moving the holding member of the CCD sensor while observing the output waveform of the D sensor.

[0004] The holding member of the CCD sensor is slidably provided on a base and fixed with screws. In addition, upstanding pieces are formed on the holding member and the base so as to face each other, and an adjusting screw is screwed between these upstanding pieces.

When adjusting the focus, after loosening the screw fixing the holding member, the adjusting screw is rotated to move the holding member to reduce the distance between the CCD sensor and the imaging lens. It is designed to adjust.

[0006]

However, in the prior art, since the adjusting screw was rotated by a driver,
The output waveform from the CCD sensor changes due to shaking when the adjustment screw is rotated or an impact when the driver is separated from the adjustment screw or the fixing screw.

Also, since the adjusting screw 7 is usually an M3 screw, the feed amount per rotation is as large as 0.5 mm in the adjusting direction. For this reason, in the focus adjustment requiring fine adjustment, it is difficult to perform the adjustment, and there is a disadvantage that the adjustment needs to be repeated and a great deal of time is wasted.

[0008] The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide an optical device, an image reading device, and an image forming device that can perform focus adjustment without using a driver or the like and that can easily perform fine adjustment.

[0009]

According to the present invention, in order to solve the above-mentioned problems, a first aspect of the present invention includes a base having a first part and a first standing piece having a screw hole formed therein. A slider slidably provided on the base, including a second component and having a second upright piece having a screw hole opposed to the first upright piece; and a first and second upright piece. The first and second screw portions are screwed into the screw holes and integrally connected through a knob portion, and are rotated by operation of the knob portion. By rotation of the first screw portion, The slider is moved by a first distance in a first direction, and the rotation of the second screw portion causes the slider to be different from the first distance in a second direction opposite to the first direction. Move a second distance to adjust the distance between the first and second parts ; And a that adjustment means.

According to a second aspect of the present invention, there is provided a base having a first part, a first standing piece having a screw hole formed therein, and a second part slidably provided on the base.
A slider formed with a second upright piece having a screw hole facing the first upright piece;
And a first and a second screw portion which are screwed into the screw holes of the second standing piece and are integrally connected via a knob, and which are rotated in the same direction by operating the knob. The first screw portion rotates the slider by a first distance in a first direction, and the second screw portion rotates the slider in a direction opposite to the first direction. Adjusting means for adjusting the distance between the first and second parts by moving in the second direction a second distance different from the first distance.

According to a third aspect of the present invention, there is provided a base provided with a first part and having a first standing piece having a screw hole, and a second part slidably provided on the base.
A slider formed with a second upright piece having a screw hole facing the first upright piece;
And a first and a second screw portion which are screwed into the screw holes of the second upright piece, are integrally connected so as to be able to come and go via a knob, and are rotated by operation of the knob. By rotating the first screw portion, the slider is moved by a first distance in a first direction, and by rotating the second screw portion,
Moving the slider in a second direction opposite to the first direction by a second distance different from the first distance,
And adjusting means for adjusting the distance between the second parts.

According to a fourth aspect of the present invention, there is provided a base provided with a first part and having a first standing piece having a screw hole, and a second part slidably provided on the base.
A slider formed with a second upright piece having a screw hole facing the first upright piece;
And a first and a second screw portion which are screwed into a screw hole of the second upright piece, are integrally connected via a first knob, and are rotated by operation of the knob. The rotation of the first threaded portion causes the slider to move in the first direction in the first direction.
And moving the slider in a second direction opposite to the first direction by a second distance different from the first distance by the rotation of the second screw portion. Fine adjustment means for adjusting the distance between the first and second parts;
And third and fourth screw holes formed in the second upright piece, and screwed into these third and fourth screw holes to be integrally connected via a second knob, and And a third screw portion that is rotated by operating the knob of the slider. The slider is moved by a third distance in a first direction by the rotation of the third screw portion. By the rotation of the screw part,
Moving the slider in a second direction opposite to the first direction by a fourth distance different from the third distance,
Coarse adjustment means for coarsely adjusting the distance between the optical component and the second component.

According to a fifth aspect of the present invention, there is provided a base having a first optical component, a first standing piece having a screw hole, and a slidably provided on the base.
A slider provided with a second optical component and having a second upright piece formed with a screw hole facing the first upright piece, and a knob screwed and screwed into the screw holes of the first and second upright pieces; A first and a second screw portion which are integrally connected via a portion and which are rotated by operation of the knob portion;
The rotation of the screw portion moves the slider a first distance in the first direction, and the rotation of the second screw portion moves the slider in a second direction opposite to the first direction. Adjusting means for adjusting the distance between the first and second optical components by moving a second distance different from the first distance.

According to a ninth aspect of the present invention, there is provided an optical scanning means for scanning a document with light, and an optical element for reading an image which is optically scanned by the optical scanning means and reflected from the document via an imaging lens. An optical system for guiding to the element, a base provided with the imaging lens and having a first standing piece having a screw hole, and an optical element for image reading provided slidably on the base, A slider formed with a second upright piece having a screw hole facing the first upright piece, and screwed into the screw holes of the first and second upright pieces and integrally connected via a knob; , Having first and second screw portions rotated by operation of the knob portion,
The rotation of the screw portion moves the slider a first distance in the first direction, and the rotation of the second screw portion moves the slider in a second direction opposite to the first direction. Adjusting means for adjusting the distance between the imaging lens and the optical element for image reading by moving a second distance different from the first distance.

According to a thirteenth aspect of the present invention, there is provided an optical scanning means for scanning a document with light, and an optical element for reading an image which is optically scanned by the optical scanning means and reflected from the document via an imaging lens. An optical system for guiding the device, image forming means for forming an image on the image carrier in accordance with image information read by the optical system, and an image on the image carrier formed by the image forming means. A transfer means for transferring to a transfer body, a base provided with the image forming lens and having a first standing piece having a screw hole, and an optical element for image reading provided slidably on the base; A slider provided with a second upright piece having a screw hole opposed to the first upright piece, and a slider screwed into the screw holes of the first and second upright pieces and integrally formed via a knob. Connected and operate the knob The first screw part is rotated by the first screw part, and the slider is moved by a first distance in a first direction by the rotation of the first screw part, and is rotated by the rotation of the second screw part. Moving the slider in a second direction opposite to the first direction by a second distance different from the first distance to increase a distance between the imaging lens and the image reading optical element. Adjusting means for adjusting.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 shows the configuration of a digital copying machine with an ADF function. In the figure, reference numeral 1 denotes an ADF (automatic document feeder) for automatically feeding a document. This A
An ADF tray 2 on which a document is placed is attached to the upper end of the DF 1. A transport belt 3 for transporting the document G is provided inside the ADF 1. Conveyor belt 3
Is provided with a reversing roller 3a and a flapper 3b. A discharge tray 3c is provided above the ADF 1. The ADF tray 2 is provided with a sensor (not shown) for detecting whether or not the document G is placed.

In FIG. 1, reference numeral 4 denotes a copying apparatus main body, and a document table 5 on which an object to be read, that is, an original G is placed, is provided on the upper surface of the copying apparatus main body 4. Inside the platen 5
On the lower side, an illumination lamp 6 for illuminating the original G placed on the original table 5, a reflector 7 for condensing illumination light generated from the illumination lamp 6 on the original G, and a reflection from the original G A first carriage 9 as an optical scanning means for reflecting light toward the second carriage 12 is provided.

The first carriage 9 incorporates a first mirror 10 for bending light reflected from the original G.
The first carriage 9 is arranged so as to be movable in parallel with the original table 5 and is moved in parallel along the original table 5 by a drive motor via a belt or the like described later.

On the second carriage 12, an original G bent via the first mirror 10 of the first carriage 9 is provided.
Mirror 13 and third mirror 13 that sequentially fold reflected light from
Are arranged at right angles to each other.

The second carriage 12 is driven by the first carriage 9 via a wire (described later) for driving the first carriage 9, and the first carriage 9
Are moved in parallel along the document table 5 at half the speed.

Below the first carriage 9, the second
A surface including the optical axis of the light turned back through the carriage 12 is formed so as to be movable via a driving mechanism (not shown), and provides convergence to the reflected light from the first carriage 12, and The imaging lens 17 as a first optical component that forms reflected light at a desired magnification by moving
Further, a CCD sensor 18 as an optical element for image reading, which photoelectrically converts the reflected light focused through the imaging lens 17 and outputs an electric signal obtained by converting an image of the original G to an image memory, is provided. Have.

The image forming section 21 includes a light source, ie, a semiconductor laser 22, and changes the intensity of the light from the laser 22 in accordance with the image information of the document G read through the CCD sensor 18, and also changes the recording medium, ie, the photosensitive medium. It has an optical device 25 facing the body 24.

The optical device 25 includes a first lens (not shown) that gives a converging property to the laser light generated from the laser 22 and converts the laser light into a laser light having a substantially circular cross-sectional shape.
A light deflector 26 for deflecting the laser light having a circular cross-sectional shape through a lens along the axial direction of the photoconductor 24, and sequentially deflecting the deflected laser light to a desired position on the photoconductor 24 A second lens 27 for matching the deflection angle of the laser light with the distance from the optical axis on the photoreceptor 24 to the position where the beam is to be formed in order to form an image, and directing the laser light to the photoreceptor 24 And includes a mirror 28 that turns back.

At a substantially central portion of the image forming section 21, a recording medium on which an electrostatic latent image (image) is formed by a laser beam from the optical device 25, that is, a photosensitive member 24 is disposed rotatably in the direction of the arrow. I have. A charging device 31 for charging a predetermined charge on the surface of the photoconductor 24 along the direction of rotation of the photoconductor 24 is provided around the photoconductor 24, and developing is performed by supplying toner to an electrostatic latent image formed on the photoconductor 24. A developing device 32, and an AC voltage applying device 33a for separating the transfer material fed from the paper cassette, ie, the paper P, from the photoreceptor 24.
A transfer device 33 for transferring the toner image formed on the photoconductor 24 to the paper P; and removing the distribution of electric charges on the photoconductor 24 while returning the charging characteristics of the photoconductor 24 to the initial state and scraping off the remaining toner. Cleaning device 34
Are arranged in order.

A built-in sheet for supplying a sheet P, for example, a copy sheet, an OHP sheet, etc., to the photosensitive member 24 at a position corresponding to the rotation direction upstream of the photosensitive member 24 and directly below the photosensitive member 24. Cassette 36 is inserted. A bypass tray 37 for feeding sheets P having various sizes one by one is provided at a position corresponding to the rotation direction upstream of the photoconductor 24 and to the right of the photoconductor 24.
Is arranged.

Between the photosensitive member 24 and the paper cassette 36, a paper feed roller 38 for drawing out the paper P one by one from the cassette 36, a paper feed roller 39 for feeding the paper P supplied from the bypass tray 37, A pair of conveying rollers 41 for feeding the sheet P pulled out via the paper rollers 38 or 39 toward the photoconductor 24, and a feeding roller for feeding the sheet P from the conveying roller 41 to the photoconductor 24. Route 42,
In addition, while correcting the inclination of the sheet P, the tip of the toner image on the photoconductor 24 is aligned with the tip of the sheet P, and the sheet P is fed at the same speed as the moving speed of the outer peripheral surface of the photoconductor 24. Are disposed.

At a position corresponding to the rotation direction downstream of the photosensitive member 24, a toner image formed on the photosensitive member 24 is transferred, and the transport device transports the sheet P on which the toner is electrostatically attached. 46, a fixing device 4 for melting the toner transferred to the paper P by heating and fixing the toner to the paper P
7, and a pair of discharge rollers 48 for discharging the paper P on which the toner image has been fixed to the outside of the apparatus. Further to the left of the discharge roller 48, a discharge tray 49 for storing the paper P on which the toner image is fixed is disposed.

At the time of image formation, the document G is conveyed to the document table 5 by the ADF 1 and placed thereon, and the document G placed on the document table 5 is irradiated with light from the illumination lamp 6 of the first carriage 9. With the first and second carriages 9,
12 is moved along the document table 5. By this traveling, light is scanned on the original G, and the reflected light from the original is first to third light.
Are transmitted to the imaging lens 17 through the mirrors 10, 13, and 14 of the first embodiment. The reflected light is focused by the imaging lens 17 and
The light is received by the D sensor 18, where it is subjected to photoelectric conversion, and thereafter, an electrical signal (a signal obtained by converting the image of the original G) is output to the image memory.

Thereafter, laser light is emitted from the laser 22 in accordance with the image information of the document G read through the CCD sensor 18. This laser light is transmitted to a first
The light is sent to the light deflector 26 via the lens, and is deflected along the axial direction of the photoconductor 24. This laser light is irradiated on the photoconductor 24 via the second lens 27 and the turning mirror 28. The surface of the photoconductor 24 is uniformly charged by the charging device 31, and an electrostatic latent image corresponding to the original image is formed on the photoconductor 24 by the irradiation of the laser beam. The electrostatic latent image is sent to the developing device 32 by the rotation of the photoconductor 24, and is developed and visualized by supplying toner from the developing device 32. The toner image thus formed is sent to the transfer device 33 by the rotation of the photoconductor 24. At this time, the paper P is supplied from the cassette 36 or the bypass tray 37, and after the paper P is aligned by the timing roller 44, the photosensitive member 24 and the transfer device 3 are transferred.
3 is sent to the image transfer section. Here, the toner image on the photoconductor 24 is transferred to the paper P. The paper P on which the toner image has been transferred is transported by the transport device 46,
The toner image is sent to a fixing device 47, where the toner image is fixed on the sheet P, and then discharged to a discharge tray 49 via a discharge roller 48.
Is discharged.

FIG. 2 is a plan view showing a mounting structure of the CCD sensor 18, FIG. 3 is a front view thereof, and FIG. 4 is a perspective view thereof.
In the drawing, reference numeral 51 denotes a holding member for fixing and holding the base 18a of the CCD sensor 18 with screws 55. The holding member 51 is supported by a slider 53 via a support member 52. The slider 53 is slidably attached to the base 54 via a guide stat 60, and is fixed by fixing screws 58,58. The imaging lens 17 is attached to a substantially central portion of the base 54.

As shown also in FIG.
Are formed on the slider 53, and bent portions 63, 63 are formed on the slider 53 as second standing pieces which are spaced apart from and opposed to the cutting pieces 56, 56. A first screw hole 56a is formed in the cut-and-raised pieces 56, 56, and a second screw hole 63a is formed in the bent portions 63, 63.

The cut and raised pieces 56, 56 and the bent portions 63, 6
Adjustment screws 65 are attached between the control screw 3 and the control screw 3.
The adjusting screw 65 includes a first screw portion 66 and a second screw portion 67.
And the first and second screw portions 66 and 67 are provided with knob portions 68.
Are connected together through

The first screw portion 66 of the adjusting screw 65 is screwed into the screw hole 56 a of the cut-and-raised piece 56 of the base 54, and the second screw portion 6 is inserted into the screw hole 63 a of the bent portion 63 of the slider 53.
7 is screwed.

The slider 53 has cut and raised pieces 57, 57.
A spring 59 is interposed between the cut and raised pieces 57, 57 and the cut and raised pieces 56, 56 of the base 54 so that the slider 53 is attracted toward the cut and raised piece 56 of the base 54. Being energized. The urging of the springs 59, 59 causes the first and second screw portions 6 to move.
The play of 6,67 screw pitch is absorbed.

The first screw portion 66 has a pitch of 0.25.
(1), clockwise, the second screw part 67 is pitch 0.3
(Article 1) is right-handed. Imaging lens 17 and CC
When adjusting the distance to the D sensor 18, the knobs 68 of the adjustment screws 65, 65 are pinched and rotated.

When the knob 68 is turned to the right by one turn, the slider 53 moves in the direction of arrow C by 0.25 mm for the lead of the first screw 66, and at the same time, the slider 53 is moved by the lead of the second screw 67. It moves in the direction of arrow D by 0.3 mm.

Therefore, when the knob 68 of the adjusting screw 65 is turned one turn to the right, the slider 53 is moved to 0.
This means that it has moved by 05 mm. When the knob 68 is turned one turn to the left, the lead of the first screw 66 is 0.25 m.
At the same time as the slider 53 moves in the direction of arrow D by m,
The slider 53 has a lead of 0.3 mm for the second screw portion 67.
Only in the direction of arrow C.

Therefore, when the knob 68 of the adjusting screw 65 is turned one turn to the left, the slider 53 is moved 0. 0 in the direction of arrow C.
This means that it has moved by 05 mm. When the mounting direction of the adjusting screw 65 is opposite to the mounting direction described above, that is, the second screw portion 67 is screwed into the cut-and-raised piece 56 side of the base 54 and the second screw portion 67 is inserted into the bent portion 63 side of the slider 51. 1 screw section 9a
Is screwed in, the slider 53 is turned clockwise one turn, and the arrow C
In the direction of arrow D, it moves 0.05 mm in the direction of arrow D, and turns one turn to the left.

As described above, the adjustment screw 65 in this embodiment has a movement amount of 0.05 mm per rotation.
Compared to a movement of 0.5 mm when the adjustment screw is rotated once by a conventional driver, the movement can be reduced to one tenth, which facilitates fine adjustment of focus.

Further, since the adjustment can be performed by operating the knob 68 without using a driver, there is no occurrence of an adjustment deviation due to a shock or a swing of the driver. FIG. 6 shows an adjusting screw according to another embodiment of the present invention.

The adjusting screw 70 has first and second screw portions 71 and 72, and the first and second screw portions 71 and 72 are connected via a knob 73 so as to be able to freely contact and separate. As shown in FIG. 7, the knob 73 includes first and second screw portions 71,
72 heads 75 and 76, and the first head 7
A cross-shaped concave portion 77 is formed in 5, and a cross-shaped convex portion 78 is formed in the second head portion 76. First head 75
The concave portion 77 and the convex portion 78 of the second head portion 76 are fitted and connected so as to be able to freely come and go.

By configuring the adjusting screw 70 so as to be dividable, assemblability and manufacturability can be improved, and the first and second screw portions 7 of the adjusting screw 70 can be improved.
The use of the general-purpose screws 1, 72, for example, the difference between M3, M4, and M5 has the effect of improving standardization and manufacturability.

FIGS. 8 to 11 show still another embodiment of the present invention. In this embodiment, in addition to the fine adjustment screw 65 described above, an adjustment screw 81 for coarse adjustment is used.
It is provided with.

An adjustment screw 81 for coarse adjustment is provided adjacent to the adjustment screw 65 for fine adjustment. Adjustment screw 8
Reference numeral 1 denotes third and fourth screw portions 82 and 83,
And a knob 8 for integrally connecting the fourth screw portions 82 and 83 together.
4 The third screw portion 82 has a pitch of 0.5 (1
）) Mm, left-handed, the fourth threaded portion 83 has a pitch of 1.0
mm (1 stitch) and left-handed. Cut and raised piece 5 of base 54
A third screw portion 82 of the adjustment screw 81 is screwed into 6, and a fourth screw portion 83 is screwed into the bent portion 63 of the slider 53.

The first screw G1 is provided on the fourth screw portion 83 of the coarse adjustment screw 81, and the second gear G2 is provided on the second screw portion 67 of the fine adjustment screw 65. Are attached, and the gear ratio is G1: a (integer) G2. An idle gear G3 is interposed between the gears G1 and G2, and the idle gear G3 is
6 and the bent portion 63.

In this embodiment, the first adjustment screw 65
The screw portion 66 is clockwise wound at a pitch of 0.7 mm (one line) mm, and the second screw portion 67 is clockwise wound at a pitch of 0.5 (one line) mm.

To roughly adjust the distance between the imaging lens 17 and the CCD sensor 18, the knob 8 of the adjusting screw 81 is used.
Pick 4 and rotate it. When the knob 84 is turned one turn to the right, the slider 53 moves in the direction of arrow C by 0.5 mm corresponding to the lead of the third screw 82, and at the same time, the slider 53 moves 1.0 mm corresponding to the lead of the fourth screw 83. Only in the direction of arrow D.

Therefore, when the knob 84 of the adjusting screw 81 is turned one turn to the left, the slider 53 is moved 0. 0 in the direction of arrow D.
This means that it has moved by 5 mm. Also, pull the knob 84 to the left by 1
When rotated, the slider 53 moves in the direction of arrow D by 0.5 mm for the lead of the third screw portion 82, and at the same time, the slider 53 moves in the direction of arrow C by 1.0 mm for the lead of the fourth screw portion 83. . Accordingly, when the knob 84 of the adjustment screw 81 is turned one turn to the left, the slider 53
In other words, it has moved by 0.5 mm in the direction.

[0049]

As described above, the present invention has the first and second screw portions which are screwed between the upright pieces of the base and the slider, and the slider is rotated by rotating the first screw portion. A first distance is moved in the first direction, and a second distance different from the first distance is moved in a second direction opposite to the first direction by rotation of a second screw portion. Therefore, the slider can be moved by the difference between the first distance and the second distance, and focus adjustment by fine adjustment is facilitated.

Further, since a knob is provided between the first and second screw portions, and the first and second screw portions are rotated by operating the knob portion, the adjustment can be performed without using a driver. There is no adjustment displacement due to the driver's impact or shaking.

Further, since a coarse adjusting means is provided in addition to the fine adjusting means, the coarse adjustment is made by the coarse adjusting means, and then the focus is finely adjusted by the fine adjusting means, whereby the focus adjusting work can be further expedited.

[Brief description of the drawings]

FIG. 1 is an internal configuration diagram showing an electrophotographic apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view showing an optical device.

FIG. 3 is a front view showing the optical device.

FIG. 4 is a perspective view showing an optical device.

FIG. 5 is a plan view showing a focus adjustment mechanism of the CCD sensor.

FIG. 6 is a plan view showing an adjusting screw according to another embodiment of the present invention.

FIG. 7 is an exploded perspective view showing the adjustment screw of FIG. 6;

FIG. 8 is a plan view showing an optical device according to still another embodiment of the present invention.

FIG. 9 is a front view showing the optical device.

FIG. 10 is a plan view showing a focus adjustment mechanism of the CCD sensor.

[Explanation of symbols]

 17 Objective lens (first optical component) 18 CCD sensor (second optical component) 18a CCD substrate 51 Holding member 52 Support member 53 Slider 54 Base 55 Fixing screw 58 Fixing screw 59 Spring 60: Guide stat 65: Adjusting screw (fine adjustment means) 66: First screw 67: Knob 67: Second screw 71: First screw 72: Second screw 75: Knob 81: Adjusting screw (coarse adjusting means) 82: Third screw part 83: Fourth screw part

Claims (16)

[Claims] 1. A base having a first part and a first standing piece having a screw hole formed thereon, and a first part slidably provided on the base and having a second part and the first part. A slider formed with a second upright piece having a screw hole facing the upright piece; and a screw screwed into the screw holes of the first and second upright pieces and integrally connected via a knob to form the slider. The first and second screw portions are rotated by the operation described above, and the slider is moved by a first distance in a first direction by the rotation of the first screw portion. The rotation causes the slider to move in the first direction in a second direction opposite to the first direction.
Adjusting means for adjusting the distance between the first and second parts by moving a second distance different from the distance of the adjusting means. 2. A base comprising a first part and a first standing piece having a screw hole formed thereon, and a first part slidably provided on the base, comprising a second part and the first part. A slider formed with a second upright piece having a screw hole facing the upright piece; and a screw screwed into the screw holes of the first and second upright pieces and integrally connected via a knob to form the slider. The first and second threaded portions have the same direction of winding of the screw rotated by the operation, and the slider is moved by a first distance in the first direction by the rotation of the first threaded portion. Moving the slider in a second direction opposite to the first direction by a second distance different from the first distance by the rotation of the second screw portion, thereby causing the first and second sliders to move. Adjusting means for adjusting the distance between the parts. Apparatus. 3. A base having a first part and a first standing piece having a screw hole formed thereon, and a first part slidably provided on the base and having a second part and the first part. A slider having a second upright piece having a screw hole facing the upright piece, and a slider screwed into the screw holes of the first and second upright pieces and integrally connected via a knob so as to be freely contactable and separable. A first and a second screw portion rotated by the operation of the knob, and the slider is moved by a first distance in a first direction by the rotation of the first screw portion; The screw portion is moved to move the slider in a second direction opposite to the first direction by a second distance different from the first distance to thereby move a distance between the first and second parts. An adjusting device, comprising: an adjusting unit that adjusts the following. 4. A base having a first part and a first standing piece having a screw hole formed thereon, and a first part slidably provided on the base and having a second part and the first part. A slider formed with a second upright piece having a screw hole opposed to the upright piece, screwed into the screw holes of the first and second upright pieces, and integrally connected via a first knob, A first screw portion that is rotated by an operation of the knob, the slider being moved by a first distance in a first direction by rotation of the first screw portion; By the rotation of the screw part,
Moving the slider in a second direction opposite to the first direction by a second distance different from the first distance,
Fine adjustment means for adjusting the distance between the first and second parts; third and fourth screw holes formed in the first and second upright pieces; and screwing into the third and fourth screw holes. It has a third and a fourth screw portion which are attached and integrally connected via a second knob portion, and are rotated by operation of the second knob portion, and by rotation of the third screw portion, Move the slider in the first direction
And moving the slider in a second direction opposite to the first direction by a fourth distance different from the third distance by rotating the fourth screw portion. And a coarse adjusting means for coarsely adjusting the distance between the optical component and the second component. 5. A base comprising a first optical component and a first standing piece having a screw hole formed thereon, and a second optical component slidably provided on the base, the second optical component being provided on the base. A slider formed with a second upright piece having a screw hole facing the first upright piece, being screwed into the screw holes of the first and second upright pieces and integrally connected via a knob portion, A first screw portion that is rotated by an operation of a knob portion, wherein the rotation of the first screw portion moves the slider in a first direction by a first distance, and the second screw portion; By rotating the portion, the slider is moved in a second direction opposite to the first direction by a second distance different from the first distance, thereby increasing a distance between the first and second optical components. An optical device, comprising: adjusting means for adjusting. 6. A base comprising a first optical component and a first standing piece having a screw hole formed thereon, and a second optical component slidably provided on the base, the second optical component being provided on the base. A slider formed with a second upright piece having a screw hole facing the first upright piece, being screwed into the screw holes of the first and second upright pieces and integrally connected via a knob portion; A first screw portion having a same direction of winding of a screw rotated by an operation of the knob, and the slider being moved by a first distance in a first direction by rotation of the first screw portion; And moving the slider in a second direction opposite to the first direction by a second distance different from the first distance by the rotation of the second screw portion, so that the first and second sliders are moved. Adjusting means for adjusting the distance between the two optical components. Optical apparatus according to symptoms. 7. A base having a first optical component and a first standing piece having a screw hole formed thereon, and a second optical component slidably provided on the base, the second optical component being provided on the base. A slider having a second upright piece having a screw hole facing the first upright piece, and a slider screwed into the screw holes of the first and second upright pieces and being freely connected to and separated from each other via a knob. A first and a second threaded portion which are connected and rotated by operation of the knob, and wherein the slider is moved by a first distance in a first direction by rotation of the first threaded portion; The first and second optical components are moved by moving the slider in a second direction opposite to the first direction by a second distance different from the first distance by rotation of a second screw portion. Adjusting means for adjusting the distance between the optical elements, Location. 8. A base having a first optical component and a first standing piece having a screw hole formed thereon, and a second optical component slidably provided on the base and having the second optical component. A slider formed with a second upright piece having a screw hole facing the first upright piece, and screwed into the screw holes of the first and second upright pieces and integrally connected via a first knob; And a first and a second threaded portion rotated by the operation of the knob, the slider being moved by a first distance in a first direction by the rotation of the first threaded portion, By the rotation of the screw part 2,
Moving the slider in a second direction opposite to the first direction by a second distance different from the first distance,
And fine adjustment means for adjusting the distance between the second optical components; third and fourth screw holes formed in the first and second standing pieces; and third and fourth screw holes. It has third and fourth screw portions that are screwed and connected integrally via a second knob portion, and are rotated by operation of the second knob portion, and are rotated by rotation of the third screw portion. Moving the slider in the first direction
And moving the slider in a second direction opposite to the first direction by a fourth distance different from the third distance by rotating the fourth screw portion. An optical device, comprising: a coarse adjustment unit that roughly adjusts a distance between the optical component and the second optical component. 9. An optical scanning means for scanning a document with light, and an optical system for guiding light, which is optically scanned by the optical scanning means and reflected from the document, to an image reading optical element via an imaging lens. A first lens having the imaging lens and having a screw hole;
And a slider slidably provided on the base, including an optical element for reading an image, and having a second upright piece having a screw hole facing the first upright piece. And a first and a second screw portion which are screwed into the screw holes of the first and second standing pieces and are integrally connected via a knob, and are rotated by operation of the knob. The rotation of the first screw portion moves the slider a first distance in a first direction, and the rotation of the second screw portion moves the slider in a second direction opposite to the first direction. The first in the direction
Adjusting means for adjusting a distance between the imaging lens and the optical element for image reading by moving a second distance different from the distance of the image reading lens. 10. An optical scanning means for scanning a document with light, and an optical system for guiding light, which is optically scanned by the optical scanning means and reflected from the document, to an image reading optical element via an imaging lens. A first lens having the imaging lens and having a screw hole;
And a slider slidably provided on the base, including an optical element for reading an image, and having a second upright piece having a screw hole facing the first upright piece. And the first and second screws, which are screwed into the screw holes of the first and second standing pieces and are integrally connected via a knob, and are rotated in the same direction by the operation of the knob. The first screw portion rotates the slider by a first distance in a first direction, and the second screw portion rotates the slider to the first position. Adjusting means for adjusting the distance between the imaging lens and the image reading optical element by moving the image forming lens in a second direction opposite to the first direction by a second distance different from the first distance. An image reading apparatus, comprising: 11. An optical scanning means for scanning a document with light, and an optical system for guiding light, which is optically scanned by the optical scanning means and reflected from the document, to an optical element for image reading via an imaging lens. A first lens having the imaging lens and having a screw hole;
And a second upright piece slidably provided on the base, including the image reading optical element, and having a screw hole facing the first upright piece. A first screw and a second screw that are screwed into the screw holes of the first and second upright pieces and are integrally connected via a knob so as to be freely separated from each other, and that are rotated by operating the knob; The first screw portion rotates the slider by a first distance in a first direction by rotation of the first screw portion, and the rotation of the second screw portion moves the slider to the first direction. Adjusting means for adjusting the distance between the imaging lens and the optical element for image reading by moving a second distance different from the first distance in a reverse second direction. Characteristic image reading device. 12. An optical scanning means for scanning a document with light, and an optical system for guiding light, which is optically scanned by the optical scanning means and reflected from the document, to an optical element for image reading via an imaging lens. A first lens having the imaging lens and having a screw hole;
And a slider slidably provided on the base, including an optical element for reading an image, and having a second upright piece having a screw hole facing the first upright piece. And the first and second screw portions screwed into the screw holes of the first and second standing pieces and integrally connected via the first knob, and rotated by the operation of the knob. The slider is moved by a first distance in a first direction by the rotation of the first screw portion, and is rotated by the rotation of the second screw portion.
Moving the slider in a second direction opposite to the first direction by a second distance different from the first distance,
And fine adjustment means for adjusting the distance between the second optical components; third and fourth screw holes formed in the first and second standing pieces; and third and fourth screw holes. It has third and fourth screw portions that are screwed and connected integrally via a second knob portion, and are rotated by operation of the second knob portion, and are rotated by rotation of the third screw portion. Moving the slider in the first direction
And moving the slider in a second direction opposite to the first direction by a fourth distance different from the third distance by rotating the fourth screw portion. An image reading device, comprising: a coarse adjustment unit that roughly adjusts a distance between a lens and an optical element for image reading. 13. An optical scanning means for scanning a document with light, and an optical system for guiding light, which is optically scanned by the optical scanning means and reflected from the document, to an image reading optical element via an imaging lens. Image forming means for forming an image on an image carrier in accordance with image information read by the optical system; transfer for transferring the image on the image carrier formed by the image forming means to a transfer object And a first means having a screw hole, the first means comprising the imaging lens.
And a slider slidably provided on the base, including an optical element for reading an image, and having a second upright piece having a screw hole facing the first upright piece. And a first and a second screw portion which are screwed into the screw holes of the first and second standing pieces and are integrally connected via a knob, and are rotated by operation of the knob. The rotation of the first screw portion moves the slider a first distance in a first direction, and the rotation of the second screw portion moves the slider in a second direction opposite to the first direction. The first in the direction
Adjusting means for adjusting a distance between the imaging lens and the optical element for image reading by moving a second distance different from the distance of the image forming apparatus. 14. An optical scanning means for scanning a document with light, and an optical system for guiding light, which is optically scanned by the optical scanning means and reflected from the document, to an optical element for image reading via an imaging lens. Image forming means for forming an image on an image carrier in accordance with image information read by the optical system; transfer for transferring the image on the image carrier formed by the image forming means to a transfer object And a first means having a screw hole, the first means comprising the imaging lens.
And a slider slidably provided on the base, including an optical element for reading an image, and having a second upright piece having a screw hole facing the first upright piece. And the first and second screws, which are screwed into the screw holes of the first and second standing pieces and are integrally connected via a knob, and are wound in the same direction by the operation of the knob. The first screw portion rotates the slider by a first distance in a first direction, and the second screw portion rotates the slider to the first position. Adjusting means for adjusting the distance between the imaging lens and the image reading optical element by moving the image forming lens in a second direction opposite to the first direction by a second distance different from the first distance. An image forming apparatus. 15. An optical scanning means for scanning an original with light, and an optical system for guiding light, which is optically scanned by the optical scanning means and reflected from the original, to an optical element for image reading via an imaging lens. Image forming means for forming an image on an image carrier in accordance with image information read by the optical system; transfer for transferring the image on the image carrier formed by the image forming means to a transfer object And a first means having a screw hole, the first means comprising the imaging lens.
And a second upright piece slidably provided on the base, having the image reading optical element, and having a screw hole facing the first upright piece. A first screw and a second screw that are screwed into screw holes of the first and second standing pieces and are integrally connected via a knob so as to be able to freely contact and separate from the slider, and are rotated by operating the knob; A first portion that moves the slider by a first distance in a first direction by rotation of the first screw portion, and rotates the slider by a rotation of the second screw portion to move the slider in the first direction. Adjusting means for adjusting the distance between the imaging lens and the optical element for image reading by moving a second distance different from the first distance in a reverse second direction. Characteristic image forming apparatus. 16. An optical scanning means for scanning an original with light, and an optical system for guiding light, which is optically scanned by the optical scanning means and reflected from the original, to an optical element for image reading via an imaging lens. Image forming means for forming an image on an image carrier in accordance with image information read by the optical system; transfer for transferring the image on the image carrier formed by the image forming means to a transfer object And a first means having a screw hole, the first means comprising the imaging lens.
And a slider slidably provided on the base, including an optical element for reading an image, and having a second upright piece having a screw hole facing the first upright piece. And the first and second screw portions screwed into the screw holes of the first and second standing pieces and integrally connected via the first knob, and rotated by the operation of the knob. The slider is moved by a first distance in a first direction by the rotation of the first screw portion, and is rotated by the rotation of the second screw portion.
Moving the slider in a second direction opposite to the first direction by a second distance different from the first distance,
And fine adjustment means for adjusting the distance between the second optical components; third and fourth screw holes formed in the first and second standing pieces; and third and fourth screw holes. It has third and fourth screw portions that are screwed and connected integrally via a second knob portion, and are rotated by operation of the second knob portion, and are rotated by rotation of the third screw portion. Moving the slider in the first direction
And moving the slider in a second direction opposite to the first direction by a fourth distance different from the third distance by rotating the fourth screw portion. An image forming apparatus comprising: a coarse adjustment unit configured to roughly adjust a distance between a lens and an optical element for image reading.